Oman Valid phone number shows a error.

[ShilpaSankaralingam]

Oman latest phone number shows a error. Update the phone number validation for Oman. Sample Number : +968 77****** - > starts with 77 , 8 didgit number.

[hbb20]

We use https://github.com/MichaelRocks/libphonenumber-android for phone validation. It will be worth bringing this to their attention.